Nasty Hag Share definition Flag A name used to jokingly insult someone. More commonly used when the person is doing something that mildly inconveniences you. Micheal just stole my bag of cheese puffs, what a nasty hag. Nasty Hag by The-Soot-Cloud June 2, 2018 0 0 Get merch Get the Nasty Hag mug. Buy Now — $32.95 See more merch